Tool-holder for lathes.



E. N. MOOR.

TOOL II'IOLDER FOR LATHES.

APPLlcm'oN Huib AuG.30. 1915.

Patented %M M f- WITNESS EDWARD N. MOOR, OF OAKLAND, CALIFORNIA.

TOOL-HOLDER FOR LATI-IES.

Specification of Letters Patent.

Patented Mar. 20, 1917.

Application filed August 30, 1915. Serial No. 47,983.

l To all whom 'it may concern.'

Be it known that I, EDWARD N. MOOR, a citizen of the United States,residing at Oakland, in the county of'Alamedaand State of California,have invented certain 'new and useful Improvements in Tool-Holders forLathes, of which the following is a specification.

My invention relates to the class of toolholders for lathes, and lnoreparticularly to an adjustable auxiliary device for holding stationarytools in lathes.

IVhen a grinding attachment is used on a lathe, and mounted upon theregular lathe carriage, it is of great advantage to have an auxiliarytool-holder for supporting a grinding-wheel truing-tool, or a locatinglinger, or the like.. For instance, if a truing-tool is held in a fixedposition in proximity to the work to be ground, the grinding-wheel lcanbe run across said tool, by means of the carriage, after each cut, or asoftenas may be necessary, without changing the position of the grinderon said carriage, or without changing the position of the work or thetruing-tool in the lathe, thereby effecting a considerable saving oftime.

The object of my invention, therefore, is to provide an adjustableauxiliary stationary tool-holder for lathes, which is adapted for useprimarily with grinding attachments.

To this end my invention consists in the novel device hereinafterdescribed with reference to the accompanying drawings, in which* Figure1 is a part-sectional elevation of my tool-holder, showing the methodIof its attachment to a horizontal lathe-bed.

Fig. 2 vis a part-sectional enlarged detail of the tool-post proper.

Fig. 3 is a part-sectional enlarged detail of the head 13 of thesupporting column 7.

In the drawings,-1 represents the bed of a horizontal lathe of the usualtype, having guides 2. My tool-holder is supported by a T-shaped basemember 3 adapted to lie across the bed 1 of the lathe, and provided witha notch 4 for engagement with one of the guides 2. The upright portionor stem 3 `of the member 3 is centrally bored at 5 to receive thecylindrical shank 6 of the supporting column 7, said column 7 being vformed with a shoulder 6 at the upper end of the shank 6. This shank 6is interiorly threaded at 8 to receive a clamping screw 9 provided witha hand wheel 10 at itslower end. A clamping bar 11, adapted to bearagainst the under side of the guide ways 2, is provided with a hole 12through which the clamping screw 9 extends, a shoulder 9 on said screw9'engaging said clamping bar 1'1.

By tightening the screw 9, the shoulder 6 of the column 7 is drawn downagainst the 'end 5 of the upright stem portion 3 of the member 3, andthe whole structure is thus firmly clamped upon the bed 1 The column 7carries at its upper end a transverse cylindrical head I13 in which isslidably mounted a horizontal rod 14. A key way 15 in said rod 14, asseen in Fig. 3, is engaged by a key 16 in the head 13,

whereby said rod 14 is prevented from turn-A ing.

Suitable means are provided for clamping the rod 14 in the head 13, as,for example, a set screw 17. The rod 14 carries upon one end avertically bored head 18, in which is slidably and rotatably mounted thetool-post proper, which consists of a sleeve 19, Fig. 2 of the drawings,a head 20, provided with a shank 21 extending through said sleeve 19,and a nut 22 screwed upon the lower end of said shank 21 for clamping atool 23 between said head 20 and the upper end of said sleeve 19.Suitable means are provided for clamping the sleeve 19 in the verticalhead l 18, as, for example, a set screw 24.

It will be clearly seen from the .drawings and the above descriptionthat the tool 23 may ybe set in any desired position. The clampingmembers 3 and 11 may be set anywhere on the lathe bed 1; the supportingcolumn 7 is rotatably adjustable in the stem 3 of the base member 3; therod 14 is horizontally adjustable in the head 13; the toolpost is bothhorizontally and vertically adjustable in the head 18,; and the tool 23is rotatably and slidably post.

In Fig. 1 of the drawings, the tool 23 is represented as a diamond-pointtruing-tool for grinding-wheels, and may be used as hereinbeforeexplained. Other uses for` my auxiliary tool-holder will suggestthemselves to anyone skilled in the use of such appli- ,ances I claim 1.An adjustable tool holderl for lathes comprising a base adapted to beclamped to a lathe bed, a vertically disposed supporting column securedfor adjustable rotation adjustable in the toolon said base, means forretaining the supporting column in its adjusted position and the baseupon the lathe bed comprising a single fastening device, and meanscarried by the column for adjustably supporting a tool holder,substantially as described.

2. An adjustable tool holder for lathes comprising a base member adaptedto rest transverselyupon a lathe bed and bridge the guides thereof, aclamping bar beneath said base member and adapted to bridge the underside ofv said guides, a supporting column having an internal aperturetherein carried by the base member and capable of a rotary adjustment, ascrew engaging the walls ofthe aperture in said column and passingthrough the base member and the clamping bar for clamping the base tothe bed, and the column to the face, and means carried by the supportingcolumn for adjustably supporting a tool, substantially as described.

3. An adjustable tool holder for lathes comprising a base member adaptedto rest upon a lathe bed, and bridge the guides thereof, said memberhaving a hollow cylindrical upward extension, clamping means disposedbeneath said base member and co-A operating with the lathe bed, asupporting column having an internally threaded cylindrical lowerportion adapted to fit within the hollow extension within the basemember and capable of a Vrotary movement, Ia screw extending downwardlyfrom said threaded portion and yengaging the clamping means and the basefor retaining the base and column in position, and tool supportingmeans'carried by said adjustable column, substantially as described.

4. An adjustable tool holder for lathes 40 comprising a base memberadapted to rest upon a lathe bed and bridge the guides thereof, saidmember having a hollow cylindrical vertical extension, a spaced clampingbar beneath said member adapted to bridge and engage the under side ofsaid guides, a supporting column having an internally threadedcylindrical lowerportion adapted to fit within the hollow extension ofthe base member and capable of a rotary adjustment,

la clamping screw extending downwardly from said threaded portion andpassing through said clamping bar for clamping the column' and basetogether and for clamping said base and bar upon the lathe bed, andhorizontally adjustable tool supporting means carried by-said column,substantially as described.

5; An adjustable tool holder for lathes comprising a base adapted to beclamped upon a lathe bed, a supporting column adjustably secured to saidbase and interfitted with a portion thereof, clamping means unl EDWARDN. MOOR.

Witnesses WM. F. Boo'rH, D. B. RICHARDS.

